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“With the idea for the adhesion now in place, there are a number of other mechanics that need addressing before the Spiderman suit can become a reality ... man’s muscles, for example, are different to those of a gecko. We would suffer great muscle fatigue if we tried to stick to a wall for many hours."
surely all you need is a crampon with the sticky stuff instead of front spikes - we're quite well adapted to standing for many hours....